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← TechnologyWhich outcome occurs when a lathe's feed rate exceeds the material's shear capacity?
A)Chatter vibrations induce surface defects✓
B)Increased tool wear requires replacement
C)Thermal expansion impacts positional accuracy
D)Excessive swarf buildup halts operation
💡 Explanation
Chatter vibrations occur due to metal's elastic response and subsequent resonance when the feed rate is too high, therefore surface defects appear as a result of this self-excited vibration from unstable cutting, rather than normal wear patterns or build-up.
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